Trying a new thing here: As they have a conversation, Artemis finishes Penny's sign in the next panel (since the word "save" starts with crossed arms and then unfolds/spreads out).
Fun fact, when I was originally writing (and re-writing) this scene- as these two talk candidly about who really saves who more, I remember having a couple of beers one night and reciting the dialogue to my wife, my eyes welling with tears the whole time. When I had finished, to my surprise, she just looked blankly at me and said "yeah, you told me all that last week. And you cried then too."